Lorenz Böhler (1885 – 1973) Austrian Physician and Surgeon. Eponymously associated with Böhler angle – a measurement on a lateral foot x-ray to determine calcaneal injuries
Gissane Angle [aka *critical angle; critical angle of Gissane], like the Böhler angle, can be used to help determine the presence of a calcaneus fracture on a radiograph.
William Gissane (1898 - 1981) was an Australian born, British surgeon. Birmingham Accident Hospital first director; critical angle of Gissane